Heald frame of power loom



United States Patent O 3,304,956 HEALD FRAME OF POWER LOOM, Akita Matsushita and Chikara Uchida, both of Tokyo-to, Japan, assignors to Toko Kabushiki Kaisha, Tokyo-to, Japan, a company ofJapan Filed June 2, 1965, Ser. No. 460,746 Claims priority, application Japan luue 4, 1964,- (utility model) 39/44,139

1 Claim. (Cl. 139-92) The present invention relates to the heald frames of a power loom particularly adapted to weaving of woven type magnetic memory devices.

It is an essential object of this invention to provide a power loom heald frame comprising parts of high interchangeability, whereby manufacture thereof is simplified.

It is another object of this invention to provide a power loom heald frame in which up-and-down movement of said frame is smoothly achieved. The manner in which the foregoing as well as other objects and advantages may best be achieved will be understood more fully from a consideration of the following description of a preferred embodiment of the invention, taken in conjunction with the accompanying illustrations in which like parts are designated by like reference characters, and in which:

FIG. 1 is a schematic side elevational view of a power loom to which the heald frame according to the invention is applied;

FIG. 2 is a perspective view showing the heald frame according to the invention;

FIG. 3(A) is a cross-sectional view taken along the line IIIAIIIA in FIG. 2;

FIG. 3(B) is a cross-sectional view taken along the line IIIB-IIIB in FIG. 2; and

FIG. 4 is a fragmentary perspective view of a vertical movable member of the heald frame of FIG. 2.

Referring now to the drawing, and more particularly to FIG. 1 thereof, the construction of a power loom of the type to which the invention is applicable is illustrated for a comprehension of the present invention.

A plurality of electroconductive warp wires 2 wound on a warp beam drum 1 shown on the right hand side of the drawing (with interspersed spacer wires in some cases) are passed through an optional number of heald frames 4 and reeds 5 after being run over a guide roller 3, and then said wires are taken up around a cloth beam drum 7 after being run over another guide roller 6.

In the case of plain weaving, as shown in the drawing, two units (a) and (b) of the heald frames 4 are arranged to move alternately in the vertical direction thereby to open the warp wire group passing through the unit (a) and the warp wire group passing through the unit (b) between the guide rollers 3 and 6 in such a manner that said groups move alternately in the vertical direction, and at said each opening motion, a magnetic wire 8 coated with a thin magnetic film is drawn through the opening thus formed at a point to the left of the reeds 5, said wire 8 being beaten into place by the oscillating reeds 5. Then the resulting woven magnetic memory element 9 is taken up around the cloth beam drum 7.

In the power loom as described above, the number of warp wires is less than that of warp yarns of ordinary power looms, thereby requiring a heald frame of narrower width. Such a requirement causes difliculty in fitting the upper and lower cross-members for hanging the healds. That is, since the width of the heald frame is narrow, it is impossible to insert each horizontal cross-member by bending as in the case of a conventional power loom, and providing of means for fitting the horizontal cross member in the state of protrusion on the surfaces of the heald frame causes disadvantages for the vertical motion of the horizontal cross-members.

3,304,955 Patented Feb. 21, 1967 "ice In order to avoid the afore-mentioned disadvantages, the heald frame according to the present invention is provided with vertical grooves formed in the opposed surfaces of right and left vertical frame members of the heald frame, a vertical movable member slidably fitted in each of said vertical grooves, upper and lower horizontal recesses spaced by a distance corresponding to distance between upper and lower horizontal cross-members and having shapes matched with the edges of said crossmembers, said recesses being formed in said vertical movable members and vertical frame members, each of said horizontal members being inserted in the horizontal recesses after the recesses of the vertical frame members are brought into alignment with the corresponding recesses of the vertical movable member, the vertical movable members being thereafter caused to slidably move downwardly thereby to hold both sides of the horizontal crossmembers by the inside of the vertical grooves of the vertical frame members, and screws to secure the vertical movable member at their resulting position.

Referring to FIG. 2, wherein a preferred embodiment of the heald frame according to the invention is shown, the vertical grooves 11 are formed in the mutually facing sides of vertical frame members 10 as shown in FIG. 3, and horizontal recesses 12 are provided in a spaced relation at two upper and two lower positions perpendicularly through one surface or both surfaces of the frame members 10, The vertical movable member 13 shown in FIG. 4 is inserted in each vertical groove 11. Horizontal recesses 14 corresponding approximately to the recesses 12 are cut in the vertical movable members 13, and horizontal cross-members 15 for hanging the heald are inserted into said horizontal recesses 14. The vertical frame members 10 are joined by top and bottom cross-frame members 16, and the vertical movable members 13 are set by screws 17 provided on the upper part of the top cross-frame members 16. Healds 18 are hung across the cross-members 15.

In order to hang the healds 18 in the heald frame 4,

' first the horizontal cross-members 15 are inserted respectively through the top and bottom rings of the healds 18, and the vertical movable members 13 are slid upwardly so as to cause the horizontal recesses 12 and 14 to coincide with each other. Then, both ends of the horizontal cross-members 15 are successively inserted in the horizontal recesses 12 and 14 from one side surfaceof the vertical frame members 10, and thereafter the vertical movable members 13 are slidably moved downwardly, whereby both ends of the horizontal cross-members 15 are held inside the vertical grooves 11 in such a manner that the healds 18 are hung. Finally the vertical movable members 13 are set by means of the screws 17 tightened against their top surfaces.

As described in the foregoing disclosure, the heald frame according to the invention provides extremely easy assembling of the horizontal cross-members and also high interchangeability of parts and affords simple manufacture of the heald frame because the vertical and horizontal frame members, vertical movable members, and horizontal cross-members can be made by parts of identical shape. In addition to the above advantages, the heald frame according to the invention has advantageous features for use in a general small-With power loom because there are no protruding parts on the surfaces of the heald frame, thereby affording smooth vertical motions.

What we claim is:

A heald frame of a power loom comprising: two opposed vertical frame members provided respectively with mutually facing vertical grooves, each said vertical frame member being provided with upper and lower horizontal recesses positioned in a predetermined spaced relation; upper and lower horizontal crossmembers; two vertical movable members each having upper and lower horizontal recesses adapted to receive the two ends of said horizontal cross-members, said recesses of said vertical movable members bein'g spaced and formed so as to match the space and form of said horizontal recesses of said vertical frame members, and said vertical movable members being respectively fitted in said vertical grooves; and stop screws adapted to set said vertical movable members after said upper and lower horizontal cross-members have been en- References Cited by the Examiner UNITED STATES PATENTS H-ul'ford 139-92 Fuyat l3992 Bracken 13 9-9l Wirtalla 13992 Strohac-ker 139-92 Dorman 139--92 gaged in said recesses of said vertical movable members 10 MERVIN STEIN Primary Examiner- J. KEECHI, Assistant Examiner.

and said cross-members have been slid downwardly. 

